On Thursday 17 September 2015 06:00:51 am Nigel Henry wrote:
> On Wednesday 16 September 2015 21:08, Tim WIlliams wrote:
> > Hi,
> >
> > Thanks for the answer.
> >
> >  > Look for a package called gtk-qt-engine, or something like that.
> >
> > According to my package manager gtk-qt-engine isn't installed.
> >
> > If I login using XFCE instead of TDE, then the problem goes away, so
> > this is definitely related to something that's activated by using TDE.
> >
> >  > (I'm assuming that "non-TDE apps" means "GTK applications".)
> >
> > I haven't checked many apps to which tool kits are and are not affected,
> > but OpenOffice, Firefox and Mageia control centre are all exhibiting the
> > problem. The Mageia control centre is a particular problem because the
> > alternative styles are making the scroll bar on the software manger very
> > "jumpy". In Firefox my the standard them gets a load of thick black
> > lines which don't look very nice.
> >
> > Any other suggestions?
> >
> > Thanks in advance.
> >
> > Tim W
>
> Hi Tim,
>
> I had similar problems with Opera which was badly drawn resulting in a
> thick black line across the tab bar and other problems with the tool bars
> not displaying correctly.
>
> I eventually resolved the problem by installing the packages below
> gtk2-engines-murrine
> murrine-themes
>
> Having installed them open tde control centre (system settings)
> appearance/gtk styles and fonts. Under GTK Styles choose use another style
> and chose one of the Murrine styles. I chose MurrinaBlue but probably any
> of the murrine styles will work.
>
> After a reboot I found that Opera was fixed.
>
> This was with Xubuntu Lucid 10.04 and Precise 12.04 both with TDE 3.5.13.2
>
> Hoping this may resolve your problem.
>
> Nigel.

In my case, non-TDE means QT4 apps, Virtualbox and VLC. I have been geting gui 
visual issues,black lines,  googling indicates a bug in QT4.8.x , which 
Debian Jessie uses. Does Opera use QT4?

I tried the 2 gtk packages to see if they would help..a long..long shot..no 
go..but I found another theme engine installed "qt4-tqt-theme-engine. I 
uninstalled this and my issues with Vbox & VLC are gone.

What was happening In Vbox, under the 'manage media' option. every odd line 
entry is shaded, with the qt4 theme engine the shaded line was black..a 
symtom of the QT4 bug is black lines. The down side is the fonts in the Vbox 
interface are smaller.


-- 

Greg M